How to typecast ?

Question

Sir,

I have used the below function

while(labelZ.text!=0)

but getting the typecast error.

Answer 1

Try this

while((int)labelZ.text!=0)

Answer 2

Use nil instead of 0.

Answer 3

To check if a string is not set, use:

labelZ.text == nil

To check if a string is an empty string, use:

[labelZ.text isEqualToString:@""]

To check if a string equals "0", use:

[labelZ.text isEqualToString:@"0"]